Valve holder



R. D. ELDER VALVE HOLDER Feb. 21, 1933.

Filed Sept. 18, 1930 Patented Feb. 21, 1933 i i l er UNITED1ST/xmasPAT'ENroFFIcE Application led September 18,v 1 930. Serial No.u 482,825.

This invention appertains to improvement of the invention as' itrappearswhen ments in valve holders` generally and more operatively installedthereon, the latter being particularly to a form thereof for facilitat.in side elevation,v f Y p ing the overhaul and repair of the valves of-Figure 2 isa vertical section through one 5 internal combustion motors,especially those form of the device per se, l y employed in yautomobilemotors of the over- Figure 3 is a-horizontalsection taken on head valvetype. vthe'line 3-3 of Figure'2, Y

An object of the invention is to provide Figure 4 isa side elevation ofone of the a holder of thisclass which will function. ininterchangeable.adaptors per se for engagea highly eliective mannertocause a `valve ment' in a spark plug opening in the motor 6o to'beheld ina proper position thata motorist head bloclgand j. l v v or amechanic may easily and readily remove Figure 5 is, a vertical vsectionthrough a a :broken or otherwise deficient spring theremodified form ofthe device. V from and replace the same with a new one Referring to thedrawing, whereinlike without removing the head from the cylindercharacters of reference designate correspond- 65 block of a motor as isusually necessary for ing parts in the several views thereof, and thepurpose, and whereby the repair operamore particularly to Figures 1 to 4inclusive, tion may be accomplished in but a few the embodiment of theinvention, as shown minutes as compared to the three or four thereinbyway of example only, is ,constitute hours time ordinarily required for'`its pered in anadaptor 10, which has the general 7@ i formance, Y vformv of the usual metal body-or shell of a Another object of theinvention resides in standard formrof spark plug, andrea substantheprovisionof a` device of ,this character tiallyY tubular extension 14arranged for dewhich is extremely simple in design, durable tachableengagement with the vadaptor 10 at' in construction', inexpensive tomanufacture one end and at its otherend to the,V adjacent 75" and .easyto v be quickly yinstalled in and ree end ofl a hose or pipe` line `22leading to a suit-4 moved from a position of use; Y able source ofV airpressure.`

Afurtherobjectof the invention lies in the These adaptors 10 arepreferably made in employment ofthe device to introduce a sup;dilferentsizes .corresponding to those of the ply of air underpressureinto the combustiony metallv bodies orsh'ells ofjdifferentstandard SU' chamber at the upper side of a cylinderof an sizes of sparkplugs, whereby the externally over-head valve type of motor whereby thevscrew Vthreadedend portion l1 vof each may air will hold the valve inits'uppermost posi. be engaged in a like sized spark plug opentionduring the removall and replacement of ing in the motor`r head blockaupon the remov-` a spring and thereby preventthe Vsame from altherefromofthe spark plug normallyjseatdropping down into the motor intheinterval ed therein. A Y between the removal and replacement opera-`The outerend portion o f thebore extendingl tions. Y Ylongitudinallythrougheach adaptor 10Qis ofv Withthe foregoing and otherequally im. Van enlarged diameter, asat v12,'and is :screw port-antobjects and advantages in view,rthe threadedfortheengagement thereinofacominvention resides in the certain new anduse.- plemental end 15. ofvthe metal extension 14', ful combination, construction and arrangewhichend 15'is .preferably of a reduced diment of parts, as will behereinafter vmore ameter to that offthe enlarged `bore portion fullydescribed, setA forth inthe appended and exteriorly screw threaded forthe pur- 45 claims, vand .illustratedin the accompanying pose, v Thisendportionof anadaptor lOis 95 drawing in which Y valso.exteriorly,enlarged, as at 13,'and pref;- Figure 1 isafragmentaryvertical transerablyformedy to polygonal form lfor the versevsection through the upper side of an engagement of a wrench or othersuitable tooly internal combustion motor V of the over-heady therewithto beemployed in tighteningand v 0 valve .type andshowinga practicalembodiloosening fthe same into and from secured 10 Suitable packings orwashers 18-and 19 are preferaby interposed between the shoulder portionof the lower or inner end of the eXtension 14 and the upper or outer endof an adaptor 10 in use at the moment on the one hand and between theupper or outer end ofV the nipple 16 and the opposed part of thecoupling17 on'the other hand respectively, 1n order to prevent leakageof air pressure at thesepoints. Y Y v Y Y Asshown in Figure 5, the.nipple 16 may first have a form of check `valve 20 secured on the samebefore the air hose or line is coupled to the extension 14. v

This check valve 2O is constituted in a tubular body Ahaving its loweror inner end eX- teriorly screw threaded for engagement on the nipple 16and its upper or outer end exteriorly screw threaded for the engagementtherewith of the coupling or nozzle 17 of an air hose or line 22. VThebore of the' valve body 2O is formed vto house an inwardly openingvalve'21 within the same, which valve is preferablyof the automaticVplunger type usually employed in pneumatictire inflation valves.

In the use of the Yvalve holder, as thus constructed and arranged, aspark plug will be removed from the head block aof an automobile motorand replaced with an adaptor 10 whose exteriorly screw threaded end,corresponds in size to that of the likeV end of the metal body or shellof the displaced spark plug. Vith the adaptor in position, the tubularextension 14- will now` have its screw Vspark plug opening, when an airsupply line Y 22 will be coupled to the outer end of the-extension 14and air permitted to pass inwardly therethrough to thecombustionichamber. With a suhcient air pressure in the combustionchamber'of the motor, the defective valve will be heldY up 'therebyduring the servicing Vof the same by the motoristgor mechanic. Y By thussustaining the aEect-ed valvey in its uppermost position, the oldspringassoci'atedtherewith maybe readily removed and a new one placed inVposition in but a comparatively short length of time, without fear ofthevalve falling downwardly of the cylinder and without removing thehead block of the motor building up of suiiicient air pressure withinthecombustionvchamber of the motor without loss by leakage during theoperation of the pump. 1

In any case, twenty-five pounds of air pressure within a combusionchamber has been found to be amply sufficient for the accomplishmentof., the intended purposes of the invention,cbut no danger of any kindwill result if a pressure up to one hundred pounds is used. y c Y -Withthis Ysimple adjunct tothe usual tool kit, a person on the road canreplace a broken valve spring with approximately the.- same ease andexpenditure of 1 time'obta-ining. inv

theY changing of a tire and of course is equally of value to themechanic as a time and labor saving adjunct to theusual repair equipmentof a motor car` garage or repair shop. y f. By providing the kouter orfree end of the tubular extension 14 vof the device withthe nipple 16for the separate engagement therewith of both the air hose or lineandthe check yvalve 20, but'one4 of the lextensions 14 is necessary witheachset of diiferent sized adaptors 10 in order topermit of theuniversal use of the device'pwith all'types ofv extension 14 willfunction to allow for the air nose or line .discharge nozzles orcouplingsv as will be obvious. -1 Y Y `Without further description, itis thought thatthe features and advantages of the inventionwillbereadily apparent to those skilled inthe art, andV it will of course beunderstood thatk changes in form, proportion and minor details: of"construction may be resorted to, without departing from the spirit ofthe invention or its scope as claimed. Iclaim:V Y 1 L 1. A valve holdercomprising an adaptor body arranged forsecured engagement with -a usualspark plug 'opening of an overhead type of internal combustion motor andhaving a bore therethrough, a straight extension of polygonal formprojecting from said body and' having Y detachable connection therewith,

a nipple at the Vouter end of said extension, .c a valve chamberarranged for vdetachable en;

gagement with said nipple, said-extension nipple having a common bore toconnect the first named bore with' said' valve chamf ber when the partsarein assembly, van inwardly opening check valve housed within saidchamber, and a conduit leading from said chamber outwardly of the valvetherein for connection with a source of compressed air whereby an amountof the latter Will be admitted to the engine to eeotively hold a valvein a manner to facilitate the removal and replacement of the valvespring.

2. The method of removing and replacing a damaged or broken spring of avalve of an over-head valve type of internal combustion engine, whichconsistsin admitting air under pressure to a combustion chamber of theengine, through the usual spark plug opening thereof, to hold the saidvalve in seated position duringl the removal and replacement of saidspring.

In testimony whereof I affix my signature.

REUBEN DRUE ELDER.

